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def fun(n,m):
a=[]
for i in range(n):
a.append(list(map(int,input().split())))
arr = np.array(a)
print(np.mean(a,axis=1))
print(np.var(a,axis=0))
print(round(np.std(a,axis=None),11))
n,m = map(int,input().split())
fun(n,m)
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Mean, Var, and Std
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import numpy as np
def fun(n,m): a=[] for i in range(n): a.append(list(map(int,input().split()))) arr = np.array(a) print(np.mean(a,axis=1)) print(np.var(a,axis=0)) print(round(np.std(a,axis=None),11))
n,m = map(int,input().split())
fun(n,m)